Move music from Time Machine back of ElCapitan to new Catalina Apple Music?
The hard drive on my ElCapitan iMac had 1000s of ripped CDs in iTunes and was backed up on a Time Machine external HD. The Mac hard drive failed. Time Machine HD is fine.
I now have a Catalina iMac with a few ripped CDs in Apple Music. How do I combine the Time Machine backup of iTunes CDs + new CDs on Apple Music on the Catalina iMac?
If I can't combine them, how do I move the Time Machine backup to Catalina/Apple Music? I'll sacrifice the handful of new CDs.
iMac 27", macOS 10.15